package cn.lcsjsxy.yxz.day15.interface_.Interfaceexercises;

    // 定义一个Circle类,声明redius属性,提供getter和setter方法

    /**/

public class Circle {

    private Double radius;

    public Double getRadius() {
        return radius;
    }
    public void setRadius(Double radius) {
        this.radius = radius;
    }

    public Circle(Double radius) {
        this.radius = radius;
    }
    public Circle() {

    }
}
